Runnin Rich

By rajei, Posted September 9, 2009

Ive a 99 honda xr250,with a clean plug it starts and idles nice .when driven the bottom end craps out @ top speeds seems to be ok.After when i pull the spark plug it shows a very rich burn-black and sooty. Then hard to start.The air cleaner is good,any suggestions? thanks

By Eddie Sisneros, Posted September 9, 2009

current jetting?

By rajei, Posted October 11, 2009

It's 135 main 45 pilot,I had the bike into shop,they suggest change of sizes.We are at sea level-1000'.thx

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This replaces the tube that connects the two carbs on a 1987 Honda XR600R (it may fit other years).
Made in the USA.
Constructed of TPU (solvent safe plastic.)
Its durable stiff abrasion resistant yet flexible enough you never have to worry about breaking it when you're taking apart your carbs.
Fits the o-ring perfectly and slips into the carb nice and tight.
Matches the rear shock coil.
If you would like to buy one contact me via e-mail. They cost $20 Shipping is free (anywhere in the USA). $10 off for active duty or retired military.
Cjmrizek@gmail.com
Make your subject: XR600r

This replaces the tube that connects the two carbs on a 1987 Honda XR600R (it may fit other years).
Made in the USA.
Constructed of TPU (solvent safe plastic.)
Its durable stiff abrasion resistant yet flexible enough you never have to worry about breaking it when you're taking apart your carbs.
Fits the o-ring perfectly and slips into the carb nice and tight.
Matches the rear shock coil.
length is Aprox. 34mm
If you would like to buy one contact me via e-mail. They cost $40 Shipping is free (anywhere in the USA). $10 off for active duty or retired military.
Cjmrizek@gmail.com
Make your subject: XR600r

This replaces the tube that connects the two carbs on a 1987 Honda XR600R (it may fit other years).
Made in the USA.
Constructed of TPU (solvent safe plastic.)
Its durable stiff abrasion resistant yet flexible enough you never have to worry about breaking it when you're taking apart your carbs.
Fits the o-ring perfectly and slips into the carb nice and tight.
Matches the rear shock coil.
If you would like to buy one contact me via e-mail. They cost $40 Shipping is free (anywhere in the USA). $10 off for active duty or retired military.
Cjmrizek@gmail.com
Make your subject: XR600r

I bought a 2006 YZ250, have ridden it 5 times. It needs some tuning, but I am not sure I'm keeping it so don't want to spend much on it.
Has fmf gnarly expansion chamber and turbine core silencer.
I ride about 1000 feet above sea level.
I'm going to clean the carb and check the jetting. What is a good jetting for me? 85 main jet?
Also check the reeds. Is there a big difference between getting aftermarket reed cage and reeds or just getting a cheap aftermarket set of reeds that fit the stock cage ie. Boyesen Power Reeds?
The other things I'm going to do is permatex all the joints in the exhaust system and a compression test. It was 220psi 5 rides ago so I'm guessing itll be fine. Its bogging a bit but I'm thinking its carb and definitely exhaust joint related.
Let me know if I'm overlooking anything that could make the bike run crisper and more bottom end without throwing much money on parts

I bought a 2006 YZ250, have ridden it 5 times. It needs some tuning, but I am not sure I'm keeping it so don't want to spend much on it.
Has fmf gnarly expansion chamber and turbine core silencer.
I ride about 1000 feet above sea level.
I'm going to clean the carb and check the jetting. What is a good jetting for me? 85 main jet?
Also check the reeds. Is there a big difference between getting aftermarket reed cage and reeds or just getting a cheap aftermarket set of reeds that fit the stock cage ie. Boyesen Power Reeds?
The other things I'm going to do is permatex all the joints in the exhaust system and a compression test. It was 220psi 5 rides ago so I'm guessing itll be fine. Its bogging a bit but I'm thinking its carb and definitely exhaust joint related.
Let me know if I'm overlooking anything that could make the bike run crisper and more bottom end without throwing much money on parts